Will I p my Grade 8?

Ok, so i have my grade 8 clarinet (AB) tomorrow and im really scared im not gonna p! Im pretty good at my pieces so im hoping for around 25 in those. Im pretty good at sight reading as well. My aural is ok, im good at sight singing and singing the b line but the modulations and identifying the cadences and chords are really hard. Also, i know my scales in thirds, majors, diminisheds, whole tones, chromatics and kind of my arpeggios. im rubbish at my minors though. i end up playing the harmonic instead of the melodic!!! Anyway, is it possible to p without being very good at scales and aural at all?